Originally Posted by
squeakr
I went to a local store today that advertises heavily...guy there said he could update to 4.23...but i am leery. He seemed really sketchy.
if it's a 3g, then the latest version you can use is 4.2.1. for later iphones, it's almost guaranteed that he can't update to anything prior to 5.0.1 (the latest) because of how apple digitally signs the firmware. what version is on there now?